Linker command failed

Sulagna Mukherjee

• 2019年04月25日 23:09

Compiling the mip1_c++ (saved as mip1.cpp here) example given in the Library using this:

g++ mip1.cpp -L /Library/gurobi811/mac64/lib/ -I /Library/gurobi811/mac64/include/ -lgurobi_c++ -lgurobi81 -m64

gives me the following error:

Undefined symbols for architecture x86_64:
"GRBEnv::GRBEnv()", referenced from:
_main in mip1-11be9d.o
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)

Working in a 10.14 os x mojave

Any help?

1

• 

  Daniel Espinoza

  • 2019年04月26日 20:39

  Hi Sulagna,

   

  most probably you are using a different C++ version. Gurobi ships with two static libraries, located in gurobi811/mac64/lib/libgurobi_g++4.2.a and gurobi811/mac64/lib/libgurobi_stdc++.a , you just need to change the symbolic link for gurobi811/mac64/lib/libgurobi_c++.a and try again.

  If this fails, you can build a static library compatible with your particular compiler. The sources are provided in gurobi811/mac64/src/cpp/

   

  Best,

  Daniel

  0
• 

  Greg Glockner

  Gurobi Staff

  • 2019年04月29日 17:27

  Also, please try the sample Makefile in the examples/build directory.

  0
• 

  Luis Moncayo

  • 2022年05月26日 18:49

  

  

  

  Dear Greg,

  I've got the same problem and I'm totally new

  could you please please help with more specific. I will appreciate it.

  Regards

  0

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